vpglsl: build with scons and glew
diff --git a/progs/SConscript b/progs/SConscript
index 544ea64..1670f97 100644
--- a/progs/SConscript
+++ b/progs/SConscript
@@ -5,5 +5,6 @@
     'samples/SConscript',
     'trivial/SConscript',
     'vp/SConscript',
+    'vpglsl/SConscript',
     'fp/SConscript',
 ])